Battery charger



FIG. 1 is a top perspective view of the battery charger, showing the new design, with a hanging clip shown in an opened position;

FIG. 2 is a bottom perspective view of the battery charger, showing the new design, with the hanging clip shown in an opened position;

FIG. 3 is a top view thereof, with the hanging clip shown in an opened position;

FIG. 4 is a bottom view thereof, with the hanging clip shown in a closed position;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a front view thereof; with the hanging clip shown in an opened position;

FIG. 8 is a back view thereof, with the hanging clip shown in a closed position; and,

FIG. 9 is another top perspective view of the battery charger with the hanging clip shown in an opened position.

Broken lines in the drawings show environmental structures that form no part of the claimed design. 

CLAIM The ornamental design for a battery charger, as shown and described. 